Photo by Victor Tyakht
The Bird's wing acts as a diffraction grating - a surface structure with a repeating pattern of ridges or slits. The structure causes the incoming light rays to spread out, bend and split into spectral colours, producing this shimmering rainbow effect, captured here by Victor. This photo is one of 25 images chosen by the UK's Natural History Museum for its 2016 short list of Wildlife Photographer of the Year candidates. The people's choice winning photo of the year will be determined after January 10, 2017.
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